Pineapples780 Pineapples780

14-04-2022
Mathematics

contestada

What is the value of x in the figure below?
15
C
D
B
X
20
A.
20
15
B. 10
C. 300
D. 5
E 20
OF
F.
45
4

What is the value of x in the figure below 15 C D B X 20 A 20 15 B 10 C 300 D 5 E 20 OF F 45 4 class=

Respuesta :

thishigopal thishigopal

18-04-2022

Answer:

choice f

Step-by-step explanation:

take ∆ abc

ab^2 = ac^2 + ab^2

400 = 225 + ab^2

ab =√ 175

∆aDB

bd = 20-x

ad^2 = 175 -(20-x)^2

∆acd

225 = x^2 + 175 - 400+ 40x - x^2

225 = -225 + 40x

450 = 40x

x = 45/4

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